Seven people were hurt on Thursday in unrelated bomb and shooting attacks in two southern provinces.
In Narathiwat, six rangers were injured when a roadside bomb exploded this afternoon.
Members of the 11th Rangers Regiment were returning to base in a pickup truck in tambon Waeng of Waeng district when a home-made bomb placed under a utility pole about 20 metres away detonated, causing two serious and four minor injuries.
Hurt were three Pvt 1st Class soldiers: Theerasak Paikij, the squad leader, Bancha Bamrungta, and Worawat Wongsopa; and paramilitary rangers Sirapob Ngeksian, Kittikorn Tithamma and Danai Lewpipat.
They were taken to Waeng Hospital. Pvt 1st Class Theerasak and Bancha were in critical condition and transferred to Sungai Kolok Hospital.
Police found a 20-kilogramme cooking-gas cylinder that had been connected by wires to a battery concealed 100 metres away in the forest.